There are many calls to die() that do, or should, report
strerror(errno) to indicate how the syscall they guard failed.
Introduce a small helper function for this case.
Code by Jeff King and Alexander Potashev, name by Johannes Sixt.
Signed-off-by: Thomas Rast <trast@xxxxxxxxxxxxxxx>
---
git-compat-util.h | 1 +
usage.c | 13 +++++++++++++
2 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/git-compat-util.h b/git-compat-util.h
index f25f7f1..0366cde 100644
--- a/git-compat-util.h
+++ b/git-compat-util.h
@@ -162,6 +162,7 @@
/* General helper functions */
extern void usage(const char *err) NORETURN;
extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
+extern void die_errno(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
diff --git a/usage.c b/usage.c
index 820d09f..1819e0a 100644
--- a/usage.c
+++ b/usage.c
@@ -60,6 +60,19 @@ void die(const char *err, ...)
va_end(params);
}
+void die_errno(const char *err, ...)
+{
+ va_list params;
+ char msg[1024];
+
+ va_start(params, err);
+
+ vsnprintf(msg, sizeof(msg), err, params);
+ die("%s: %s", msg, strerror(errno));
+
+ va_end(params);
+}
+
int error(const char *err, ...)
{
va_list params;
--
1.6.3.2.288.g40844
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